make animation clock on Power Point

Today, February 1,2012. Ms  Indri  teach YHS 7A about Power  Point 2007. She teach animation, how  to make  animation  just as  rotate of  Clock. I see it.
1. Make 6 slides
2. Insert shape - circle -  make  perfect - drag while  press  Ctrl  on key board
3. Insert shape - rectangle - make just as  hour hand (jarum jam)
4. Block all object than group
5.Click Custom Animation - Effect - Emphasis - Spin.
6. Run it

Since last year I curious this  trick. Just know  now.
Thank you Ms  Indri.